function init(){
    Array.from(document.querySelectorAll(".leftMenuLi1_image")).forEach((item)=>{
        item.addEventListener("click",(event)=>{
            let currentNode=event.target.parentElement.nextElementSibling;
            if(currentNode.hidden==false){
                item.style.transform="rotate(90deg)";
                currentNode.hidden=true;
            }else{
                item.style.transform="rotate(-90deg)";
                currentNode.hidden=false;
            }
        },false);
    });
}
window.addEventListener("load",init,false);